Synthesis of 7-aryl-2-dimethylamino-3,4,5,6- tetrahydropteridine-4,6-diones

Heterocycles

Volumn 43, Issue 2, 1996, Pages 437-442

  Taylor, Edward C ^a   Takahashi, Masahiko ^b   Kobayashi, Norio ^b  

^a PRINCETON UNIVERSITY   (United States)

^b IBARAKI UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0345723089     PISSN: 03855414     EISSN: None     Source Type: Journal    
DOI: 10.3987/com-95-7313     Document Type: Article

References (18)

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2. (b) D. J. Brown, "The Pyrimidines, Supplement I", Vol. 16 of "The Chemistry of Heterocyclic Compounds", ed. by A. Weissberger and E. C. Taylor, Wiley-Interscience, New York, 1970;
3. (c) D. J. Brown, "The Pyrimidines; Supplement II", Vol. 16 of "The Chemistry of Heterocyclic Compounds", ed. by A. Weissberger and E. C. Taylor, John Wiley & Sons, New York, 1985.
4. D. J. Brown, "Fused Pyrimidines. Part Three. Pteridines", Vol. 24 in "The Chemistry of Heterocyclic Compounds", ed. by E. C. Taylor, John Wiley and Sons, New York, 1988.
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6. (b) I. J. Pachter, in "Pteridine Chemistry. Proceedings of the 3rd International Symposium", ed. by W. Pfleiderer and E. C. Taylor, MacMillan, New York, 1964, 47-64.
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11. H. Böhme and W. Krause, Ber., 1949, 82, 426.
12. 3), 108.66, 128.47 (CH), 132.10 (CH), 133.91, 138.53, 150.05, 157.36, 161.15, 165.90, 176.73.
13. A. W. Johnson and R. T. Amel, J. Org. Chem., 1969, 34, 1240.
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16. 3), 68.11 (CH), 106.18, 120.90, 128.66 (CH), 131.14 (CH), 139.68, 155.92, 157.93, 159.84, 166.29.
17. S. Kano and Y. Yuasa, Heterocycles, 1981, 16, 1449.
18. M. Takahashi and M. Hatazaki, Heterocycles, 1995, 41, 1667. In this paper, various 1,3-disubstituted 5-amino-4-nitrosopyrazoles were condensed with dimethylphanacylsulfonium bromides in boiling pyridine to give pyrazolo[3,4- b]pyrazin-5(4H)-ones and/or pyrazolo[3,4-b]pyrazine 4-oxides.